package com.itheima.reggie.service.Impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomerException;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.mapper.EmployeeMapper;
import com.itheima.reggie.pojo.Category;
import com.itheima.reggie.pojo.Dish;
import com.itheima.reggie.pojo.Employee;
import com.itheima.reggie.pojo.Setmeal;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.EmployeeService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.lang.model.element.VariableElement;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {
    @Autowired
    private DishService dishService;
    @Autowired
    private SetmealService setmealService;
    @Override
    public void remove(Long id) {
        //1.判断dish中的id是否存在
        QueryWrapper<Dish> queryWrapper1=new QueryWrapper<>();
        queryWrapper1.eq("category_id",id);
        int count1 = dishService.count(queryWrapper1);
        if(count1>0){
            throw new CustomerException("删除失败");
        }
        //2.判断setmeal中的id是否存在
        QueryWrapper<Setmeal> queryWrapper2=new QueryWrapper<>();
        queryWrapper2.eq("category_id",id);
        int count2 = setmealService.count(queryWrapper2);
        if(count2>0){
            throw new CustomerException("删除失败");
        }
        //调用方法删除
        this.removeById(id);
    }
}
